Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5bcae264d0eaf8d…

MALICIOUS

PDF

74.5 KB Created: 2021-01-18 05:53:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: d2d007bd20e655315747eac88aa58706 SHA-1: ec5ffe3a6a59a7acfd4387a82fff5fadca7b33a7 SHA-256: d5bcae264d0eaf8d03b7a6339ae728870e9e63f9aa2ea6a966df8d94078c37fb
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure and a large number of external PDF links, suggesting a link farm or phishing attempt. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of numerous embedded URLs points towards an attempt to redirect users to potentially harmful sites, possibly for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffking.ru/123?utm_term=mickey+mouse+toaster+silver In PDF document text
    • https://cdn.sqhk.co/xenotami/jwgiUgi/exorbitant_synonyme_francais.pdfIn PDF document text
    • https://dafebifu.weebly.com/uploads/1/3/4/3/134399244/92b0b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414687/normal_5fecbb6e380dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383300/normal_5fae1644b61ac.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/gWBpgeS/91336804041.pdfIn PDF document text
    • https://cdn.sqhk.co/mukutosi/uRsjc9a/sakidebi.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/jjcRibu/alone_season_7_finale_stream.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367961/normal_5fc2f46372d76.pdfIn PDF document text
    • https://cdn.sqhk.co/jobiwokojo/bjdigii/terabikozitaxebamoxomixiw.pdfIn PDF document text
    • https://sawobefuridavo.weebly.com/uploads/1/3/4/8/134895752/1628103.pdfIn PDF document text
    • https://cdn.sqhk.co/torujazelome/hbIicif/beat_the_boss_2_removed.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/hiphdPN/fakumuvelasena.pdfIn PDF document text
    • https://zifidobu.weebly.com/uploads/1/3/4/3/134371145/ridasibofiketabub.pdfIn PDF document text
    • https://cdn.sqhk.co/dulidara/P9Pdhaq/fairy_dress_up_games_2012.pdfIn PDF document text
    • https://cdn.sqhk.co/vobipibomuk/lidijg5/ruzebe.pdfIn PDF document text
    • https://cdn.sqhk.co/xogedusov/ciibuhb/ruwaxejox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377100/normal_5fadf6cc73852.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367919/normal_5fbd668eed6b9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B0 5176 bytes
SHA-256: 34ec5c470e2c33eb55cc4bdd70dccf5aca20393ab633b6a25e82b9fe9de0eeb6
font_01_sfnt_off0000f64d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF64D 11604 bytes
SHA-256: eb3b3cccc48fbc2a5aa423e08634dba7f70a1aa3da45f999e1e330c7bc94f00b

Open this report in the interactive analyzer, or submit your own file for analysis.